The purpose of this study was to explore the personality and psychological wellbeing of Spiritualist mental mediums compared to nonmedium Spiritualists. A total of 159 Spiritualists (mediums = 80, nonmediums = 79) participated in a nationwide cross-sectional survey and completed measures of dissociation, boundary-thinness, psychological wellbeing, fantasy-proneness, and personality. Mediums scored significantly higher than nonmediums on psychological wellbeing, t = 3.80, p <.001, and reported lower psychological distress, t = 3.25, p = .001, but no significant differences were found between the groups on dissociation or boundary-thinness. Secondary analyses revealed significant differences for extraversion, t = 2.01, p = .046, neuroticism, t = 3.59, p = <.001, and openness to experience, t = 3.21, p = .002, but not for fantasy-proneness, agreeableness, or conscientiousness. Findings suggest that mediumship is not associated with a reported incidence of dissociative experiences or pathology. Results are discussed in relation to previous research that has proposed the mediumship role may serve a therapeutic function